Questions tagged [lengths]

{lengths} is for questions dealing with measurements in TeX. If your question is about the spacing between document elements, use {spacing} instead.

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52
votes
2answers
7k views

Is there a \show for lengths?

The \show command is extremely useful for figuring out what's going on with a particular macro. Similarly, using \the can tell me the value of a counter. I'd like to know if there's something ...
1
vote
1answer
3k views

Set the length of 1ex

How can I set the length of 1ex? I tried \setlength{1ex}{4.40999pt} but I get errors.
26
votes
3answers
9k views

How can I know the default PGF line width?

Is there some macro that will tell me what the default PGF line width is? I have tried creating my own macro by cloning \pgflinewidth before it has been modified, i.e. \let\defaultlinewidth\...
5
votes
2answers
180 views

Can you add a constant value to a length macro?

I have a box that's the full width of the page. I would like to offset it back into the margin a little, but when I do that it no longer reaches the edge of the page. Is it possible to keep using a ...
11
votes
2answers
607 views

Other than syntax what is the difference between \dimen0= and \setlength{}{}?

I have been browsing around for a while trying to find an answer to the above question, and I have found some similar questions along with there answers, so I already have a vague idea how to answer ...
4
votes
1answer
706 views

Lengths and for-loops

It seems that lengths are not updated in for loops. Compiling the code below: \documentclass{article} \usepackage{tikz} \newlength{\test} \newcommand{\inc}{\addtolength{\test}{1cm}} \newcommand{\incs}...
2
votes
1answer
193 views

Convert from float to length

I am using \pst@divide to divide a length in half \setlength{\RLEN}{4cm} \addlength{\RLEN}{\OFFSET} \pst@divide{\RLEN}{2cm}\RLEN ... \setlength{\DIST}{2cm} \addlength{\DIST}{\RLEN} % does not work. ...
22
votes
4answers
5k views

A line of length \textwidth in TikZ

Why does the following latex document: \documentclass{minimal} \usepackage{tikz} \begin{document} \noindent \begin{tikzpicture} \draw (0,0) -- (\textwidth,0); \end{tikzpicture} \...
7
votes
2answers
1k views

Visual debugging of lengths in paragraphs and environments?

During my searches, I found a couple of online images, which I doubt are produced with Latex - however, I found them immensely useful in understanding what is going on. I'm pretty sure the images ...
14
votes
2answers
6k views

How to use \widthof as parameter to \kern

I sometimes encounter a problem when I attempt to use \widthof from the calc package, and don't know why. In the past I have just worked around it using a two step process of defining a \newdimen{} ...
8
votes
1answer
437 views

calc package incompatible with \setlength in \g@addto@macro?

I want to systematically have some indentation in \parboxes and minipage environments. To do this, I add the following code in the preambule of my LaTeX file: \makeatletter \g@addto@macro\@...
16
votes
2answers
2k views

What is the plain TeX equivalent of \settowidth?

The \settowidth command, which sets a width equal to the width of some text, is described at Get width of a given text as length and How to set the width of the label of a description to the width of ...
6
votes
1answer
369 views

Usage of a saved dimension in another saved dimension in a \pgfdeclareshape command

I have a question about \saveddimen usage inside of a \pgfdeclareshape command. My code is as follows: \documentclass{article} \usepackage{tikz} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % \...
11
votes
2answers
164 views

Does a space belong after pt?

Does a space always belong after pt, e.g. as used in \hskip1pt? If a space is used, are there situations where a space will appear where it is not intended? If no space is used, will pt be ...
4
votes
2answers
3k views

Problem with \makebox and the unit in the dimensions

I want to superpose a text to some other object (in this aces a picture). My idea is to store the picture in \mabox, to display it with in a \makebox with 0 width and height, then to display the text ...
4
votes
1answer
643 views

Better alignment for enumitem list

In the following screenshot, the alignment of the 2nd A) and the space between the label of the 2nd list and the fraction have been obtained empirically n: see \hspace*{1.375em} and label*={\Alph*)\,\,...
8
votes
2answers
616 views

How does the enumitem package place the labels?

In the following screenshot, I would like the 1st item A) in the inline mode to be at the same level of indentation of the labels A) to D) in the first list. To do that I would like to know how the ...
4
votes
1answer
294 views

Measure and retain lengths between tabular rows

I need elements in a tabular environment to set some lengths and be able to access these lengths in another row of this same table. But it appears that adding \global in front of \settoheight and \...
5
votes
1answer
999 views

Is it possible to remove length, counter, dim, etc that have been declared?

Let's see the following screenshot taken from an answer of Efficient ways to anonymize a document and the given comment. Is it possible to remove length, counter, dim, etc, that have been declared in ...
3
votes
1answer
2k views

Multiplying a length by a factor

I am trying to create a package that will use grid typesetting (in the humanities, so not much of a problem) but that should allow the user to freely set the \baselinestretch. I am using the memoir ...
11
votes
2answers
2k views

Add two lengths in raisebox argument, without the calc package

I've seen people use such constructs as \raisebox{-\height+\baselineskip}{...}, which works well using the calcpackage. What equivalent would you use to achieve the same behaviour without the calc ...
5
votes
2answers
3k views

fontsize setting with newcommand and newlength

How do I set a \newcommand so that the field #1, which is calculated to be 1.2*#2 Optional? Something similar to the following commands, but that did not work. \documentclass{article} \usepackage[...
10
votes
2answers
1k views

How can I globally set pgfmathsetlength?

How can I declare a length via pgfmathsetlength global? The example results in 20pt -- 5pt -- 20pt But I had expected: 20pt -- 5pt -- 5pt \documentclass[10pt]{article} \parindent0pt \usepackage{...
15
votes
4answers
4k views

Conversion pt to mm or cm

Is there any way how to convert pt to mm or cm in plain TeX?
1
vote
1answer
511 views

Use pgfplots and a custom length to define global width when inputing the plot

I'm trying to set the width for all my plots, that are defined in other files and imported into the main document, using a custom width, \sz. I'm trying to set this length because I want to change it ...
6
votes
1answer
708 views

What does a number followed by “ in” mean?

The TeX syntax highlighter that I use colors all occurrences of a number followed by " in", e.g. 0 in or 32 in in a dangerous bright red, in almost all contexts. Why?
5
votes
1answer
1k views

TikZ, foreach and sum

I'm trying to create a list of rectangles of various sizes, starting at the end of the previous rectangle. I'm using a foreach loop with a TeX length, but I don't get the result I want, and I really ...
3
votes
2answers
1k views

Linewidth resets when using input files

I'm trying to set some figure files in standalone .tex files, and then input them in the main file. Those files looks something like this \ifx \plotwidth \undefined \newlength{\plotwidth} \setlength{...
11
votes
3answers
2k views

String replacement in LaTeX

I'd like to know how to replace parts of a string in LaTeX. Specifically I'm given a measurement (like 3pt, 10mm, etc) and I'd like to remove the units of that measurement (so 3pt-->3, 10mm-->10, etc)....
2
votes
3answers
848 views

Make a length negative

I was wondering if there is a way to have a \negate command which makes lengths negative. So you could do things like: \newlength{\negativeabovecaptionskip} \setlength\negativeabovecaptionskip{\...
15
votes
4answers
3k views

Is there a way of limiting the scope of \newlength?

Is there a way of limiting the scope of \newlength? I'm using the same name in many TikZ picture but each with different value, and I don't want it to live on between the pictures as it's not intended ...
14
votes
1answer
5k views

Minimum length for \xrightarrow

I want to place text over arrows. The obvious choice is to use the amsmath command \xrightarrow{#1} However, sometimes the text above may be a single digit: %Example 1 \xrightarrow{1} other times ...
13
votes
1answer
2k views

Why do \setcounter and \addtocounter commands have global effect, while \setlength and \addtolength commands obey the normal scoping rules?

The \setcounter and \addtocounter commands have global effect, while the \setlength and \addtolength commands obey the normal scoping rules. Why were they designed like this? Why are \setcounter ...
1
vote
1answer
285 views

How should I express my length calculation to minimize rounding errors?

I have an input file as follows. % Test.tex \documentclass{article} \usepackage{pstricks} \psset { linewidth=0.01 } \newcommand\All{0.1} \newcommand\Left{-\All} \newcommand\Right{\All} \newcommand\...
11
votes
3answers
545 views

Making register declarations local, Undefining a register (count, toks, etc.)

Is it possible to make \newcount, \newtoks, etc. respect grouping, so that, e.g., \newcount\temp\temp=2{\newcount\temp\temp=1}\showthe\temp gives 2 (instead of 0)? Relatedly, is it possible to ...
10
votes
2answers
420 views

Confused with whether or not I have to use \the

I got confused with whether or not I have to use \the. \the in \special{papersize=\the\paperwidth,\the\paperheight} is mandatory. But \the in neither \begin{pspicture}(\the\paperwidth,\the\...
4
votes
1answer
274 views

Length needs backslash but counter does not, why?

\documentclass{minimal} \parindent=0sp \newlength{\Length} \setlength{\Length}{1in} \newcounter{Count} \setcounter{Count}{10} \begin{document} \the\Length \theCount \end{document} Length needs ...
4
votes
1answer
3k views

A new paragraph followed by a big skip

Here is the code I am using to place a heading with a line above and below the text, from this post. \newcommand{\rheading}[1] { \par \bigskip \hrule height 1pt \kern 5pt \hbox to ...
33
votes
2answers
7k views

What are the differences between \newdimen, \newskip and \newlength?

What are the differences between \newdimen, \newskip, and\newlength? When should I use each of them? Please give me a non-trivial example for each case.
4
votes
2answers
2k views

Is there a command to convert cm to bp?

I want to convert a length in cm (centimeter) to bp (big point). Is there a command to convert cm to bp?
24
votes
2answers
942 views

Which is better: a dimension or a macro?

When messing around with TikZ/PGF then I frequently find myself wanting to store a length for later use. By "length" here, I mean the word in its non-TeX meaning. As I'm doing stuff in TikZ/PGF then ...
13
votes
2answers
2k views

Where is the left-hand margin?

I'm working on the TikZ-from-TeX-SX package, specifically developing the code for putting equation numbering at places within a tikzpicture environment. To do this, I need to know where the text ...
13
votes
3answers
717 views

Measure the length of the lowercase alphabet

In the memoir manual speaks about measuring the length of the lowercase alphabet in order to decide the numbers of characters per line. Can this be done with LaTeX?
32
votes
2answers
18k views

What is the difference between \def and \newlength?

I wrote the following LaTeX documents. \documentclass[11pt]{book} \newlength{\mywidth} \newlength{\myheight} \setlength{\mywidth}{85mm} \setlength{\myheight}{112mm} \newcommand{\setpagesize}[2]{% ...
9
votes
2answers
1k views

Does {1em} mean {1em plus0pt minus0pt}?

Is plus0pt and minus0pt automatically added if I write, e.g., \setlength{\abovedisplayskip}{1em} \setlength{\jot}{0pt} \setlength{\parsep}{0pt} ...
3
votes
2answers
1k views

How to convert number to length?

I'm trying to generate a "word cloud" by using \mboxes with random spaces around words. In the code below I've removed stuff that change the font size, and I've replaced \mboxes by \frameboxes for ...
22
votes
2answers
9k views

Getting length as number?

I have probably formulated the question wrong, as I don't know the Tex internals - but this is what I mean; consider this example: \newcommand{\myNum}{2} \newlength{\myLength} \setlength{\myLength}{\...
5
votes
1answer
332 views

How to pass the value of \mylength to the “trim” option of \includepdf of pdfpages.sty?

This problem is related to my previous problem about pdf trimming. Here is the minimal code: \documentclass{article} \usepackage{pdfpages} \usepackage[paperwidth=6.38in,paperheight=4.025in,margin=...
7
votes
4answers
2k views

A macro that expands to the length of its argument

If I want to anonymise a paper I've written for review, I don't just want to delete my name from the author field. I want to replace my name with a rule as tall as a capital letter and as long as my ...
12
votes
2answers
4k views

Calculate maximum of lengths

How can I calculate a maximum of lengths? I am aware of pgfmath's function max(x_1,x_2,...) \documentclass[a4paper,draft]{article} \usepackage{tikz} \pgfmathparse{max(3,4)} \begin{document} \end{...